lkml.org 
[lkml]   [2010]   [Jul]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH RFC tip/core/rcu 01/30] net: convert to rcu_dereference_index_check()
Date
The task_cls_classid() function applies rcu_dereference() to integers,
which does not work with the shiny new sparse-based checking in
rcu_dereference(). This commit therefore moves to the new RCU API
rcu_dereference_index_check().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
include/net/cls_cgroup.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/include/net/cls_cgroup.h b/include/net/cls_cgroup.h
index 726cc35..dd1fdb8 100644
--- a/include/net/cls_cgroup.h
+++ b/include/net/cls_cgroup.h
@@ -45,7 +45,8 @@ static inline u32 task_cls_classid(struct task_struct *p)
return 0;

rcu_read_lock();
- id = rcu_dereference(net_cls_subsys_id);
+ id = rcu_dereference_index_check(net_cls_subsys_id,
+ rcu_read_lock_held());
if (id >= 0)
classid = container_of(task_subsys_state(p, id),
struct cgroup_cls_state, css)->classid;
--
1.7.0.6


\
 
 \ /
  Last update: 2010-07-14 22:19    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site